On Sat, Nov 29, 2003 at 12:18:33PM +0800, WANG Yong wrote: > I am using libpcap to receive ISO8473 CLNP/802.2 LLC1 packets from > network interface and I need to set some filter using pcap_compile() > API. This API has a parameter named netmask. I suppose this is only > useful when doing jobs related to TCP/IP, so in my case i can safely > ignore it and set it any value.
It's useful only for the "ip broadcast" filter expression, which checks for IPv4 broadcasts - it checks whether the "local host" part of the IPv4 destination address is all 1's. If you specify 0, filter expressions with "ip broadcast" won't work. Everything else will work. - This is the TCPDUMP workers list. It is archived at http://www.tcpdump.org/lists/workers/index.html To unsubscribe use mailto:[EMAIL PROTECTED]
